Adel Ridha Othman, et al. “Bi- Level Optimization of Multi-Microgrids: A Review Considering Demand Response Aggregators”. Journal of Electronic Voltage and Application, vol. 6, no. 1, June 2025, pp. 1-9, https://penerbit.uthm.edu.my/ojs/index.php/jeva/article/view/17479.